Using WordPress’ hooks and filters, you can extend PublishPress Planner notifications in the following ways:
pp_edit_post_subscriptions_cap
(filter) – Change the capability required to modify who’s subscribed to a post.pp_notification_auto_subscribe_current_user
(filter) – Whether or not to auto-subscribe a user editing the post or leaving an editorial comment. The former action passes ‘subscription_action’ and the latter ‘comment’. Default is to auto-subscribe.pp_notification_status_change
(filter) – Kill notifications for specific post status changes (or all).pp_notification_ignored_statuses
(filter) – Another way to kill notifications for specific post status changes.pp_notification_editorial_comment
(filter) – Kill notifications for editorial comments.pp_notification_recipients
(filter) – Modify who receives a notification. Default is all subscribers.